21082680

素因数分解:

$2^3\times 3^7\times 5^1\times {\mathrm{241}}^1$

素因数の和:273

約数の個数: 128

約数和(自身を含む): 71438400

約数和(自身を除く): 50355720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 241, 243, 270, 324, 360, 405, 482, 486, 540, 648, 723, 729, 810, 964, 972, 1080, 1205, 1215, 1446, 1458, 1620, 1928, 1944, 2169, 2187, 2410, 2430, 2892, 2916, 3240, 3615, 3645, 4338, 4374, 4820, 4860, 5784, 5832, 6507, 7230, 7290, 8676, 8748, 9640, 9720, 10845, 10935, 13014, 14460, 14580, 17352, 17496, 19521, 21690, 21870, 26028, 28920, 29160, 32535, 39042, 43380, 43740, 52056, 58563, 65070, 78084, 86760, 87480, 97605, 117126, 130140, 156168, 175689, 195210, 234252, 260280, 292815, 351378, 390420, 468504, 527067, 585630, 702756, 780840, 878445, 1054134, 1171260, 1405512, 1756890, 2108268, 2342520, 2635335, 3513780, 4216536, 5270670, 7027560, 10541340, 21082680]

約数ペア:

[(1, 21082680), (2, 10541340), (3, 7027560), (4, 5270670), (5, 4216536), (6, 3513780), (8, 2635335), (9, 2342520), (10, 2108268), (12, 1756890), (15, 1405512), (18, 1171260), (20, 1054134), (24, 878445), (27, 780840), (30, 702756), (36, 585630), (40, 527067), (45, 468504), (54, 390420), (60, 351378), (72, 292815), (81, 260280), (90, 234252), (108, 195210), (120, 175689), (135, 156168), (162, 130140), (180, 117126), (216, 97605), (241, 87480), (243, 86760), (270, 78084), (324, 65070), (360, 58563), (405, 52056), (482, 43740), (486, 43380), (540, 39042), (648, 32535), (723, 29160), (729, 28920), (810, 26028), (964, 21870), (972, 21690), (1080, 19521), (1205, 17496), (1215, 17352), (1446, 14580), (1458, 14460), (1620, 13014), (1928, 10935), (1944, 10845), (2169, 9720), (2187, 9640), (2410, 8748), (2430, 8676), (2892, 7290), (2916, 7230), (3240, 6507), (3615, 5832), (3645, 5784), (4338, 4860), (4374, 4820)]